Microencapsulation of pigments for application in special paints

• Grant number: 02/12928-3
• Support Opportunities: Research Grants - Innovative Research in Small Business - PIPE
• Start date: August 01, 2003
• End date: January 31, 2004
• Field of knowledge: Engineering - Chemical Engineering - Chemical Technology
• Principal Investigator: Jose Leoni Tremeschin
• Grantee: Jose Leoni Tremeschin
• Company: Carol Química Ltda
• City: Monte Mor

Abstract

The technique to be developed in this project should minimize or even eliminate some of the existing problems in pigments used in paints. There will be a chemical protection of the pigment with the coating of its particles, providing greater resistance to aggressive agents, such as ultraviolet rays, acidity and alkalinity existing in the localities where the paint is applied. It is also hoped that, with the encapsulation of the pigment, it will present a minimum of aggregate and agglomerates, which permit economy and greater speed in the paint-making process. The encapsulation could result in decreased absorption of the pigments and represent a possible solution to the problem of stocking some paints which, with the passage of time, lose their drying power. This is because the pigments begin a process of absorbing the drying agents which disables, by means of chemical reactions with the vehicle, its characteristic of promoting the drying of the paint with a consequent loss of the product’s shine and finish. (AU)